Cleaning method

The present invention provides a cleaning method in which the feed water is consecutively contacted with an appropriate combination of cation exchange resin material and anion exchange resin material. As a result, wash amplified water (WAW) is produced having a pH value that is more than 0.5 pH unit...

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Bibliographische Detailangaben
Hauptverfasser:	VAN KRALINGEN CORNELIS G, RIKSEN HARM J, VERHAGEN JOHANNES J, REINHOUDT HANK R
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLEANING CLEANING IN GENERAL FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR LAUNDERING LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILEARTICLES METALLURGY PERFORMING OPERATIONS PREVENTION OF FOULING IN GENERAL TEXTILES TRANSPORTING TREATMENT OF TEXTILES OR THE LIKE TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	The present invention provides a cleaning method in which the feed water is consecutively contacted with an appropriate combination of cation exchange resin material and anion exchange resin material. As a result, wash amplified water (WAW) is produced having a pH value that is more than 0.5 pH unit different from the feed water and a water hardness of less than 5° FH. In this method, the resins are regenerated with the use of an electric field. In step (ii) of the cleaning method of the invention, the wash-amplified-water is mixed with a detergent product that is substantially builder-free and contains at least 10% wt of surfactant. This cleaning method is preferably a fabric washing or dishwashing method.